>>gretchen: you say forget the debt ceiling, forget the fiscal cliff. we have a demographic cliff, meaning that we have more older people now to sustain in our society and not enough young people coming up to keep the balance? >> right. that's what happens when you're below the replacement period for a long period of time. you have many more old people, fewer young people to support them. then you have to make choices. do you cut defense, cut benefits for the older people, do you raise taxes on workers? it winds up in a very bad situation. >>gretchen: let's look at the american family size. in the blue line, you're going to see, this is zero to two kids. that's been on the rise. in the red it's three-plus kids, which has been on the decline. i'm in the blue. i have two kids. you're currently in the red. you have three kids. but people having bigger families obviously for a variety of reasons is just not happening. >> it's harder. it's harder for all sofrts of reason -- sorts of reason. take, for instance, college. we are expanding educational opportunit